Pronouncing Latin Alphabet

Recently, a tricky question came into my mind. How do you pronounce the Latin alphabet in chinese? Suppose, you live in, let's say Taiwan, and you have got, for instance, a problem with your computer.

Then, you decide to call the customer care by phone and they want you to read the serial numer of the device, which would be something like that: Q832947GST34F. Now, how do you pronounce the letters in the serial number. Do you use the English pronunciation or is there a Chinese way to do it?